<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="url" name="名字" method="get"></form>
    <form action="url" name="名字" method="post"></form>

    <form>
        <input type="text">
        <input type="submit">
    </form>

    <form>
        用户名：<input type="text"><br>
        密  码：<input type="password">
        <input type="submit" value="登录">
    </form>
</body>
</html>